Is It a Mirror Or 2-Way Glass?

 How can we tell the difference between a real mirror or a 2-way glass in public bathrooms, hotel rooms or  changing rooms?  It quite easy. Here is a simple test provided by a policewoman who travels all over the U.S.
She gives  seminars to businesswomen about security issues. Just place the  tip of your fingernail against the reflective surface. If its is a genuine  mirror,  there will be about a 1/8" gap between your actual fingernail and the actual reflection of your finger nail.  However, if your fingernail DIRECTLY TOUCHES the image of your nail with NO SPACE or NO GAP, then BEWARE! IT'S A 2-WAY MIRROR! Now you motto should be,
"No Space, Leave The Place". So remember to do the fingernail test every time you see a  mirror. All ladies should share this information with their girlfriends, sisters, daughters and moms. Men should share this info with their wives, daughters, daughters-in-laws, moms, girlfriends and friends.